He would never have been cast to play the role of a bloody South American dictator in a Hollywood film. Soft-spoken, deeply religious, rake thin and awkward, his lean face cut horizontally by an incongruously thick walrus …

When asked about her identity, Laura Jayne Minto Ceballos, a 19-year-old Falkland Islander studying in the U.K., has a less than straightforward answer. Her father’s family hails from Scotland and her Chilean mother was born in …